神光-Ⅱ装置配套速度干涉仪  

Velocity interferometer for reflector at Shenguang-Ⅱ laser facility

作　　者：舒桦[1] 傅思祖[1] 黄秀光[1] 贾果[1] 董佳钦[1] 叶君建[1] 顾援[1] 

机构地区：[1]中国工程物理研究院上海激光等离子体研究所,上海201800

出　　处：《强激光与粒子束》2010年第7期1577-1579,共3页High Power Laser and Particle Beams

基　　金：国家高技术发展计划项目

摘　　要：介绍了神光-Ⅱ装置配套线成像速度干涉仪光路排布、用于任意反射面的速度干涉仪系统中干涉仪结构的选择及干涉仪的调节。该仪器可以用于测量自由面速度、界面速度和透明材料中冲击波波阵面速度。该仪器的最小时间分辨力可达约20 ps,空间分辨力高于10μm。并在神光-Ⅱ装置上进行了动态打靶实验,实验用靶为Al-CH靶,获得了较好的实验图像,测得了CH中冲击波的平均传播速度为24.67 km/s。A line velocity interferometer for any reflector has been implemented at the Shenguang-Ⅱ laser facility. This in- strument is the primary diagnostic for a variety of experiments involving laser-driven shock-wave propagation, materials character- ization experiments and shock timing experiments. It measures velocities of interfaces, free surfaces and shock fronts traveling through transparent media. It can measure shock breakout time at temporal resolutions as low as 20 ps, and spatial resolution 10 μm. Experiments were carried out on the Shenguang-Ⅱ laser facility and high quality interference images were obtained.

关 键 词：速度干涉仪 冲击波 激光 多普勒 

分 类 号：O649[理学—物理化学] O439[理学—化学]